---
product_id: 386212214
title: "MAX, 12 lb Can, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs"
brand: "flex paste"
price: "฿39132"
currency: THB
in_stock: true
reviews_count: 5
category: "Flex Paste"
url: https://www.desertcart.co.th/products/386212214-max-12-lb-can-white-waterproof-paintable-putty-spackle-sealant
store_origin: TH
region: Thailand
---

# Fully paintable & UV resistant Dries underwater Watertight rubberized barrier MAX, 12 lb Can, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs

**Brand:** flex paste
**Price:** ฿39132
**Availability:** ✅ In Stock

## Summary

> 🛠️ Flex Paste MAX: Seal it, paint it, forget it—ultimate waterproof power in a can!

## Quick Answers

- **What is this?** MAX, 12 lb Can, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs by flex paste
- **How much does it cost?** ฿39132 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/386212214-max-12-lb-can-white-waterproof-paintable-putty-spackle-sealant)

## Best For

- flex paste enthusiasts

## Why This Product

- Trusted flex paste brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Custom Finish Flexibility:** Paintable and UV resistant for seamless, long-lasting repairs that blend perfectly with your surfaces.
- • **Seal & Protect Like a Pro:** Penetrates deep to block air, water, and moisture with a flexible, durable rubberized shield.
- • **Super Thick, Super Strong:** Instantly fills large gaps, cracks, and holes with a clingy, heavy-duty paste that won’t sag or shrink.
- • **Underwater Application Ready:** Unique formula cures even underwater—perfect for emergency fixes and tough environments.
- • **Stay Fresh Container Innovation:** Air-tight packaging locks in freshness and sealing power—no waste, no dry-out.

## Overview

Flex Paste MAX is a 12 lb white, waterproof, paintable rubberized putty designed to fill and seal large gaps, cracks, and holes across multiple surfaces. It features a stay-fresh container to prevent waste, cures underwater, and forms a flexible, UV-resistant barrier that protects against water, air, rust, and corrosion. Ideal for indoor and outdoor repairs on walls, roofs, RVs, concrete, and more, this American-made sealant combines professional-grade durability with easy application.

## Description

Liquid rubber in a can! It sprays out as a thick liquid, seeps into cracks and holes and dries to a watertight, flexible, rubberized coating. Coats, seals, protects and will Stop Leaks Fast!

Review: When you are trying to repair your parents’ old house , and trying to keep costs down., this is one of the best things to use . It’s not goopy but easy to transfer, spread , and plugs the holes , tears, or whatever the damage that you found. We used some on one of our bathrooms too. Fantastic !!
Review: excellant

## Features

- NEW! STAY FRESH CONTAINER – Blocks out air and locks in freshness to extend the sealing power of Flex Paste, with no waste
- COAT, SEAL & PROTECT - Penetrates deep to seal out air, water, and moisture. Once dry, it turns into a strong, flexible, watertight, rubberized barrier
- WORKS UNDERWATER - Can be applied underwater, and it even dries underwater
- FILLS LARGE AREAS - Super thick rubber paste clings to the surface and instantly fills large gaps, cracks, and holes
- FULLY PAINTABLE - Once fully cured, it can be painted any color. Helps prevent rust and corrosion, and it is UV resistant
- EXCELLENT FOR – filling cracks and holes, foundation and concrete repairs, sealing out rodents and pests, bath and shower, indoor and outdoor projects, roof, RV, motorhome, auto, marine, lawn and garden projects, DIY, hobbies, and more
- MADE IN THE USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B084TDHKVJ |
| Brand Name | Flex Paste |
| Color | White |
| Compatible Material | Wood, Glass, Tile, Concrete, Aluminum, Metal, Brick, Stucco, Masonry, Copper, Fabric, Fiberglass, Ceramic, Porcelain, Natural Stones, Roofing, Pvc, Eifs, Cspe, Epdm, Hypalon Polyurethanes |
| Customer Reviews | 4.1 4.1 out of 5 stars (178) |
| Included Components | Household Item |
| Item Dimensions | 19.7 x 17.1 x 17.1 centimeters |
| Item Form | Paste |
| Item Type Name | Flex Seal Paste MAX 12 lb Tub (White) FLEX SEAL - PFSMAXWHT01 |
| Item Weight | 12 Pounds |
| Manufacturer | Swift Response, LLC |
| Material Type | Rubber |
| Model | FLEX SEAL - PFSMAXWHT01 - WHITE |
| Number of Items | 1 |
| Part Number | PFSMAXWHT01 |
| Style Name | 12 lb WHT |
| Surface Recommendation | Tub |
| UPC | 850010226897 |
| Unit Count | 192 Ounce |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Paste
- **Item dimensions L x W x H:** 19.7 x 17.1 x 17.1 centimeters
- **Item weight:** 12 Pounds
- **Material:** Rubber
- **Style:** 12 lb WHT

## Images

![MAX, 12 lb Can, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs - Image 1](https://m.media-amazon.com/images/I/81vv0bSfptL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by D***Z on 19 October 2021*

When you are trying to repair your parents’ old house , and trying to keep costs down., this is one of the best things to use . It’s not goopy but easy to transfer, spread , and plugs the holes , tears, or whatever the damage that you found. We used some on one of our bathrooms too. Fantastic !!

### ⭐⭐⭐⭐⭐ Review
*by W***Y on 2 October 2025*

excellant

### ⭐⭐⭐⭐⭐ Review
*by P***R on 8 August 2021*

I loved this product. I used it to seal the cracks in my basement and 6 weeks later my radon levels have been cut in half!

## Frequently Bought Together

- Flex Paste MAX, 12 lb Can, White, Waterproof Paintable Putty, Spackle Sealant, Fill Gaps Cracks Holes - Block Out Water and Air - UV Resistant - Walls, Drywall, EPDM, Concrete, Roof, RV Repairs
- Flex Tape, MAX, 4 in x 25 ft, Clear, Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor Projects - Home RV Roof Plumbing and Pool Repairs
- Flex Tape, MAX, 4 in x 25 ft, White, Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor Projects - Home RV Roof Plumbing and Pool Repairs

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/386212214-max-12-lb-can-white-waterproof-paintable-putty-spackle-sealant](https://www.desertcart.co.th/products/386212214-max-12-lb-can-white-waterproof-paintable-putty-spackle-sealant)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-27*